Jacinda Ardern, Neve storm world media

Prime Minister Jacinda Ardern has returned to Parliament, sparking a wave of attention around the world.

Ms Ardern took six weeks of maternity leave to look after her baby, Neve Te Aroha Ardern Gayford.

Her reappearance, complete with interviews with major media organisations, has been picked up around the world.

The New York Times called her "something of a trailblazer on the gender and parenting front".

"The 38-year-old's pregnancy was seen by many as a symbol of progress for women in leadership roles as she became only the second elected leader, after Pakistan's Benazir Bhutto in 1990, to have given birth in office," The Irish Times wrote.

Much attention was given to her new parenting skills, including her experience with her child's poo.

"Ms Ardern revealed the most surprising thing she experienced after becoming a new mother was to do with her daughter's digestive system," the Daily Mail exclaimed.

While she was on maternity leave, her responsibilities were picked up by Acting Prime Minister Winston Peters. His short tenure was "marked by drama", according to The Guardian, which pointed out several controversial moments including attacks on Australia and multiculturalism.

But overseas media also pointed out the challenges Ms Ardern faces on her return to power.

"Business unease continues to quietly simmer in the background with a growing number of surveys showing a lack of confidence in the centre-left government," CBS News reported.

"Elementary-school teachers are expected to strike later this month, also over pay," The NY Times says.